diff --git a/llvm/include/llvm/Frontend/OpenMP/OMP.td b/llvm/include/llvm/Frontend/OpenMP/OMP.td
--- a/llvm/include/llvm/Frontend/OpenMP/OMP.td
+++ b/llvm/include/llvm/Frontend/OpenMP/OMP.td
@@ -116,10 +116,29 @@
     OMP_PROC_BIND_unknown
   ];
 }
+
+// static and auto are C++ keywords so need a capital to disambiguate
+def OMP_SCHEDULE_Static : ClauseVal<"Static", 2, 1> {}
+def OMP_SCHEDULE_Dynamic : ClauseVal<"Dynamic", 3, 1> {}
+def OMP_SCHEDULE_Guided : ClauseVal<"Guided", 4, 1> {}
+def OMP_SCHEDULE_Auto : ClauseVal<"Auto", 5, 1> {}
+def OMP_SCHEDULE_Runtime : ClauseVal<"Runtime", 6, 1> {}
+def OMP_SCHEDULE_Default : ClauseVal<"Default", 7, 0> { let isDefault = 1; }
+
 def OMPC_Schedule : Clause<"schedule"> {
   let clangClass = "OMPScheduleClause";
   let flangClass = "OmpScheduleClause";
+  let enumClauseValue = "ScheduleKind";
+  let allowedClauseValues = [
+    OMP_SCHEDULE_Static,
+    OMP_SCHEDULE_Dynamic,
+    OMP_SCHEDULE_Guided,
+    OMP_SCHEDULE_Auto,
+    OMP_SCHEDULE_Runtime,
+    OMP_SCHEDULE_Default
+  ];
 }
+
 def OMPC_Ordered : Clause<"ordered"> {
   let clangClass = "OMPOrderedClause";
   let flangClassValue = "ScalarIntConstantExpr";
@@ -238,8 +257,14 @@
 def OMPC_NonTemporal : Clause<"nontemporal"> {
   let clangClass = "OMPNontemporalClause";
 }
+
+def OMP_ORDER_concurrent : ClauseVal<"default",2,0> { let isDefault = 1; }
 def OMPC_Order : Clause<"order"> {
   let clangClass = "OMPOrderClause";
+  let enumClauseValue = "OrderKind";
+  let allowedClauseValues = [
+    OMP_ORDER_concurrent
+  ];
 }
 def OMPC_Destroy : Clause<"destroy"> {
   let clangClass = "OMPDestroyClause";
diff --git a/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td b/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
--- a/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
+++ b/mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
@@ -96,6 +96,59 @@
   let assemblyFormat = "attr-dict";
 }
 
+//===----------------------------------------------------------------------===//
+// 2.9.2 do Construct
+//===----------------------------------------------------------------------===//
+
+def DoOp : OpenMP_Op<"do", [AttrSizedOperandSegments]> {
+  let summary = "workshare loop construct";
+  let description = [{
+    The workshare loop construct specifies that the iterations of the associated
+    loops will be executed in parallel by threads in the current context. These
+    iterations are spread across threads that already exist in the enclosing
+    parallel region
+
+    The $private_vars, $firstprivate_vars, $lastprivate_vars and $linear_vars
+    parameters are a variadic list of variables that specify the data sharing
+    attribute of those variables. The $linear_step_vars variable additionally
+    specifies the step for each associated linear variable. Note that the
+    $linear_vars and $linear_step_vars variadic lists should contain the same
+    number of elements.
+
+    The optional $schedule_val attribute specifies the loop schedule for this
+    loop, determining how the loop is distributed across the parallel threads.
+    The optional $schedule_chunk_var associated with this determines further
+    controls this distribution.
+
+    The optional $collapse_val attribute specifies that the following number of
+    loops should be collapsed into a single loop before being distributed.
+
+    The $nowait attribute, when present, signifies that there should be no
+    implicit barrier at the end of the loop.
+
+    The optional $ordered_val attribute specifies how many loops are associated
+    with the do loop construct.
+
+    The optional order attribute specifies which order the iterations of the
+    associate loops are executed in. Currently the only option for this
+    attribute is "concurrent".
+  }];
+
+  let arguments = (ins Variadic<AnyType>:$private_vars,
+             Variadic<AnyType>:$firstprivate_vars,
+             Variadic<AnyType>:$lastprivate_vars,
+             Variadic<AnyType>:$linear_vars,
+             Variadic<AnyType>:$linear_step_vars,
+             OptionalAttr<ScheduleKind>:$schedule_val,
+             Optional<AnyType>:$schedule_chunk_var,
+             OptionalAttr<AnyI64Attr>:$collapse_val,
+             OptionalAttr<UnitAttr>:$nowait,
+             OptionalAttr<AnyI64Attr>:$ordered_val,
+             OptionalAttr<OrderKind>:$order_val);
+
+  let regions = (region AnyRegion:$region);
+}
+
 //===----------------------------------------------------------------------===//
 // 2.10.4 taskyield Construct
 //===----------------------------------------------------------------------===//
diff --git a/mlir/test/Dialect/OpenMP/ops.mlir b/mlir/test/Dialect/OpenMP/ops.mlir
--- a/mlir/test/Dialect/OpenMP/ops.mlir
+++ b/mlir/test/Dialect/OpenMP/ops.mlir
@@ -113,3 +113,33 @@
 
   return
 }
+
+func @omp_do(%data_var : memref<i32>, %linear_var : si32, %chunk_var : si32) -> () {
+
+  // CHECK: "omp.do"(%{{.*}})
+  "omp.do" (%data_var) ({
+    omp.terminator
+  }) {operand_segment_sizes = dense<[1,0,0,0,0,0]> : vector<6xi32>, collapse_val = 2, ordered_val = 1} :
+    (memref<i32>) -> ()
+
+  // CHECK: "omp.do"(%{{.*}}, %{{.*}})
+  "omp.do" (%data_var, %linear_var) ({
+    omp.terminator
+  }) {operand_segment_sizes = dense<[0,0,0,1,1,0]> : vector<6xi32>, schedule_val = "Static"} :
+    (memref<i32>, si32) -> ()
+
+  // CHECK: "omp.do"(%{{.*}}, %{{.*}}, %{{.*}}, %{{.*}}, %{{.*}}, %{{.*}})
+  "omp.do" (%data_var, %data_var, %data_var, %data_var, %linear_var, %chunk_var) ({
+    omp.terminator
+  }) {operand_segment_sizes = dense<[1,1,1,1,1,1]> : vector<6xi32>, schedule_val = "Dynamic", collapse_val = 3, ordered_val = 2} :
+    (memref<i32>, memref<i32>, memref<i32>, memref<i32>, si32, si32) -> ()
+
+  // CHECK: "omp.do"(%{{.*}})
+  "omp.do" (%data_var) ({
+    omp.terminator
+  }) {operand_segment_sizes = dense<[1,0,0,0,0,0]> : vector<6xi32>, nowait, schedule_val = "Auto"} :
+    (memref<i32>) -> ()
+
+
+  return
+}